(_d_) For cases that are _not suitably met by (a) or (c) of this paragraph_ the commands: 1. =Right (left) forward, fours right (left)=, 2. =MARCH=, are authorized. The right four is the base and moves forward following the leader, who promptly takes position in front of the guide of the column (pars. 325, 374). The second four from the right starts to move as in fours right (par. 391), its guide decreasing the pace until the right four has partly cleared the second four, when the latter four, by a movement approximating an oblique, enters the column so as to follow in the trace of the leading (original right) four at 4 feet distance. The other fours execute =fours right= (each slightly decreasing the pace during the turn), and then =column left=, so as to follow the second four at the proper distance. The fours move simultaneously and, except as noted above, all at the same gait (par. 337-_d_). In the execution of the movement dismounted the right four moves forward; the remainder of the squad executes =fours right, column left=, and follows the right (leading) four at 92 inches distance. The right four takes four short steps just after it, clears the four next on its left, then resumes the full step. (Fig. 46.) [Illustration: FIG. 44, par. 403 (_a_).] [Illustration: FIG. 45, par. 403 (_b_).] [Illustration: FIG. 46, par. 403 (_d_).] EXTENDED ORDER. =404.= In extended-order drills the troopers habitually march =at ease=, but keep on the alert so as promptly to conform to the indications of the leader and the movements of the guide. The rifles of dismounted troopers in extended order are carried as in par. 61. =405.= Foragers may be formed when the squad is in any authorized formation (par. 468) or in disorder, when it is moving at any gait or is halted. The extension is effected toward the direction of march. When possible the deployment should be made upon ground protected from hostile view and fire. Whatever the method employed for the extension, the leader controls the movements of the base (par. 323). The other troopers, moving at a _gallop_, form =foragers= in accordance with the methods indicated. The squad, deployed as =foragers=, is marched to the front and halted, obliques, resumes the original direction, executes changes in gait and changes of direction, by the commands and methods prescribed for the squad in =line=. =406.= The appropriate substitution of =skirmishers= for =foragers=, is made in the commands for movements in extended order, dismounted (par. 368-_c_). The skirmishers move at a run to their positions on the line of foragers. =407.= A greater or less interval than 3 yards between foragers may be ordered, the words =at (so many) yards= being added to the preparatory command so as immediately to follow the word =foragers= or =skirmishers=. =408.= =Being in line, to form foragers=: 1. =Foragers=, 2. =MARCH.=